However, the prevalence of prior hospitalization for heart failure did not differ across the self‐rated knowledge groups and the use of pharmacological therapy, including renin–angiotensin system inhibitors, beta‐blockers, and mineralocorticoid receptor antagonists was broadly similar in each knowledge category (although device therapy was more commonly used in patients with ‘good’ self‐rated knowledge). This evidence concerns the gene NR3C2 and heart failure.